Huber HTS 15 EO, Operation Manual

Page: 74 / 82

Service/maintenance
OPERATION MANUAL Chapter 7
Heat Transfer Station eo
V2.3.0en/22.04.20//17.12
74
Thermal fluid is not inspected on a regular basis
DAMAGE TO THE HEAT EXCHANGER AND/OR ELECTROMECHANICAL PARTS.

Regularly check your thermal fluid whether it meets the specifications in the safety data sheet.
Oxidation
Oxidation ages the thermal fluid and changes its characteristics (e.g. reduced boiling point). The
reduced boiling point may cause overflow of very hot thermal fluids during temperature control of
high temperatures. It may cause serious burns of the limbs.
Hygroscopy
During continuous temperature control below room temperature the thermal fluid accumulates
water by hygroscopicity over time. Such a liquid mixture causes the evaporator to burst during
temperature control in the minus range. This is caused by the water in the liquid mixture, which
forms ice crystals on the evaporator. A temperature control of such a liquid mixture at high tem-
peratures reduces the boiling point. A temperature control at high temperatures may cause an
overflow of very hot thermal fluid as a result of the reduced boiling point. It may cause serious
burns of the limbs.
7.5.2 Thermal fluid replacement
Mixing different thermofluids in a thermal fluid circuit
PROPERTY DAMAGE

Do
not
mix different types of thermofluid (such as mineral oil, silicone oil, synthetic oil, water,
etc.) in a thermofluid circuit.

The thermal fluid circuit
must
be rinsed when changing from one type of thermal fluid to an-
other. No residues of the previous type of thermal fluid may remain in the thermal fluid circuit.
7.5.2.1 Externally open application
To replace the thermal fluid, proceed as described on page 56 in Section »Externally open applica-
tion« . The draining and filling operations are described in this section.
7.5.3 Rinsing the thermal fluid circuit
Setpoint and overtemperature protection are not adjusted to the thermofluid
MORTAL DANGER FROM FIRE

The cut-out value of the overtemperature protection must be adapted to the thermofluid. Set
the cut-out value of the overtemperature protection 25 K below the fire point of the ther-
mofluid.

The setpoint set during rinsing must be adjusted to the thermofluid used.
Non-compliance with the safety data sheet for the thermal fluid to be used
INJURIES

Risk of injury to the eyes, skin, respiratory tract.

The safety data sheet for the thermal fluid to be used must be read prior to using it and its
content must be respected.

Observe the local regulations/work instructions.

Wear your personal protective equipment (e.g. temperature-resistant safety gloves, safety
goggles, safety footwear).

Danger of slipping because floor and work area are contaminated. Clean the work station and
follow the instructions for the disposal of thermal fluid and material on page 15 in section
»Proper disposal of resources and consumables«
.
Mixing different thermofluids in a thermal fluid circuit
PROPERTY DAMAGE

Do not mix different types of thermofluid (such as mineral oil, silicone oil, synthetic oil, water,
etc.) in a thermofluid circuit.

The thermal fluid circuit must be rinsed when changing from one type of thermal fluid to an-
other. No residues of the previous type of thermal fluid may remain in the thermal fluid circuit.